CN106686701B - A kind of interior method and device for combining economize on electricity between cell of cell - Google Patents

Abstract

The present invention provides a method and device for joint power saving within and between cells, wherein the method includes: receiving cell state information including load value, energy saving type and activation state reported by each cell, wherein the cells include: energy saving cells and Compensation cell; according to the pre-obtained correspondence between the load value and the power consumption value of each cell in the different activation states of each energy-saving type and the received cell state information, for each energy-saving cell, calculate the saving by closing the energy-saving cell separately. The power consumption value P ₁ and the power consumption increase value P ₂ of the compensation cell caused by the user of the energy-saving cell switching to the corresponding compensation cell, and calculate the difference between P ₁ and P ₂ ; the difference calculated according to each energy-saving cell value, determine the energy-saving cell corresponding to the largest difference, and turn off the determined energy-saving cell. The invention utilizes the energy saving potential of the base station itself and the whole network, reduces the network power consumption from the whole network level, and improves the network efficiency.

Description

A method and device for joint power saving in and between cells

technical field

The present invention relates to the technical field of access networks, and in particular, to a method and device for joint power saving within and between cells.

Background technique

In the existing network, Global System for Mobile Communication (GSM), Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) and Long Term Evolution (LTE) and Wireless Local Area Networks (WLAN) jointly support seamless geographical coverage. The coverage of GSM base stations is more than 1km, the coverage radius of TDSCDMA wireless transmission technology is about 1km, the coverage radius of LTE Macro is 500 meters, and the coverage radius of LTE Micro is 200 meters. Small base stations such as the pico base station Pico and the home base station Femto can cover about 10 meters. In a certain area, GSM and TD-SCDMA may coexist, or LTE macro base station Macro and micro base station Micro may coexist, as shown in Figure 1. Overall, the large base station is responsible for coverage, and the small base station is responsible for absorbing capacity. At present, service distribution is uneven in time and space. Therefore, when the entire network load is low at midnight, some small base stations that supplement heat can be appropriately shut down, and macro base stations can be used instead to carry capacity, without affecting user perception. saves energy.

At present, the energy consumption of the access network accounts for the vast majority of the energy consumption of the entire communication network, and is the most important part of the green network. The device-level energy efficiency of a single network is low, and the overall energy consumption is relatively large. There have been many energy-saving technologies applied to device-level devices, such as improving the efficiency of power amplifiers, improving current conversion efficiency, and reducing the power supply of computer room air conditioners; energy-saving measures for device-level devices Equipment-level energy-saving solutions such as carrier shutdown and time slot shutdown are also relatively mature. In the face of the large-scale outbreak of data services and the large-scale commercial use of TD-LTE, network-level energy-saving strategies have become a focus of attention. The energy efficiency of the whole network is maximized.

The existing equipment-level energy-saving technologies and network-level energy-saving technologies are basically separate systems. Most of the equipment-level energy-saving technologies are energy-saving algorithms developed by the equipment manufacturers themselves, while the network-level energy-saving technologies are less researched. The current energy-saving methods are basically limited to a single direction, and lack comprehensive energy-saving methods and systems for the entire wireless communication system.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide a method and device for joint power saving in and between cells, aiming to solve the problem that the equipment-level energy-saving technology and the network-level energy-saving technology in the prior art are separated into systems, and the energy-saving method is limited to a single direction , the lack of comprehensive energy saving for the entire wireless communication system.

An embodiment of the present invention provides a method for joint power saving within a cell and between cells, the method comprising:

Receive cell status information including load value, energy saving type and activation status reported by each cell, wherein the cells include: energy saving cells whose network coverage is covered by neighboring cells and compensation cells other than the energy saving cells;

According to the pre-obtained correspondence between the load value and the power consumption value of each cell in different activation states of each energy-saving type and the received cell state information, for each energy-saving cell, calculate and disable the power-saving cell. The saved power consumption value P ₁ and the power consumption increase value P ₂ of the compensation cell caused by the user of the energy-saving cell switching to the corresponding compensation cell, and calculating the difference between the P ₁ and the P ₂ ;

According to the difference calculated by each energy-saving cell, the energy-saving cell corresponding to the largest difference is determined, and the determined energy-saving cell is turned off.

Wherein, before receiving the cell state information including the load value, the energy saving type and its activation state reported by each cell, the method further includes:

Each of the energy-saving cells and a compensation cell corresponding to the energy-saving cells are determined.

Wherein, before receiving the cell state information including the load value, the energy saving type and its activation state reported by each cell, the method further includes:

The corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy saving type is preset, wherein the corresponding relationship according to the difference of the energy saving type and its activation state at least includes: the activation symbol turns off the load-power consumption corresponding relationship, the corresponding relationship between the load and the power consumption when the channel is turned off, the corresponding relationship between the load and the power consumption when the carrier is turned off, and the corresponding relationship between the load and the power consumption when no energy saving function is activated.

Wherein, after the determined energy-saving cell is turned off, the method further includes:

Continue to calculate the P ₁ of the remaining energy-saving cells, the P2 of the corresponding compensation cells, and the difference between the P ₁ and the P ₂ , and determine that the energy-saving cell corresponding to the largest difference is turned off until the P ₁ and the P 2 are closed. The difference value of P ₂ is negative or the load value of the corresponding compensation cell reaches the upper limit.

Wherein, according to the pre-obtained correspondence between the load value and the power consumption value of each cell in different activation states of each energy-saving type and the received cell state information, for each energy-saving cell, calculate the shutdown value separately. The power consumption value P ₁ saved by the energy-saving cell and the power consumption increase value P ₂ of the compensation cell caused by the user of the energy-saving cell switching to the corresponding compensation cell include:

According to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type, for each energy-saving cell, search for the current function corresponding to the load value of the energy-saving cell when the energy-saving cell is not turned off. consumption value P _Mi ;

Calculate the difference between the current power consumption value P _Mi of the energy-saving cell and the pre-stored sleep power consumption value P _sleep of the energy-saving cell to obtain the P ₁ ;

Find the current power consumption value P _Ma corresponding to the load value of the compensation cell corresponding to the energy-saving cell according to the corresponding relationship between the load value and the power consumption value of each cell under different activation states of each energy-saving type;

Calculate the difference between the current power consumption value P _Ma of the corresponding compensation cell and the determined power consumption value P _Ma ′ after the corresponding compensation cell carries the user load value of the energy-saving cell, and obtain the P ₂ .

Wherein, before the calculation of the difference between the current power consumption value P _Ma of the corresponding compensation cell and the power consumption value P _Ma ′ obtained after the corresponding compensation cell carries the user load value of the energy-saving cell, the method also further include:

Obtain the user load value of the energy-saving cell;

Determine the load value after the corresponding compensation cell bears the user load value of the energy-saving cell;

According to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type, the power consumption value P _Ma ′ after the corresponding compensation cell carries the user load value of the energy-saving cell is obtained.

An embodiment of the present invention further provides an apparatus for joint power saving within a cell and between cells, the apparatus comprising:

A receiving module, configured to receive cell status information including load value, energy-saving type and activation state reported by each cell, wherein the cell includes: an energy-saving cell whose network coverage is covered by a neighboring cell and compensation other than the energy-saving cell community;

The processing module is configured to calculate the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy saving type and the received cell state information, respectively, for each energy saving cell. The power consumption value P ₁ saved by turning off the energy-saving cell and the power consumption increase value P ₂ of the compensation cell caused by the user of the energy-saving cell switching to the corresponding compensation cell, and calculating the difference between the P ₁ and the P ₂ value;

A determination processing module, configured to determine the energy-saving cell corresponding to the maximum difference value according to the difference calculated by each energy-saving cell, and close the determined energy-saving cell.

Wherein, the device also includes:

A determining module, configured to determine each of the energy-saving cells and a compensation cell corresponding to the energy-saving cell before the receiving module receives the cell state information including the load value, energy-saving type and activation state reported by each cell.

Wherein, the device also includes:

A setting module, configured to preset the load value and power consumption of each cell under different activation states of each energy-saving type before the receiving module receives the cell state information including the load value, energy-saving type and its activation state reported by each cell The corresponding relationship between the values, wherein the corresponding relationship includes at least: the corresponding relationship between the activation symbol and the load-power consumption, the corresponding relationship between the activation channel and the load-power consumption, and the activation of the carrier and the load-power consumption. Power consumption correspondence and load-power consumption correspondence when no energy-saving features are activated.

Wherein, the device also includes:

A calculation processing module, configured to continue to calculate the P ₁ of the remaining energy-saving cells, the P2 of the corresponding compensation cells, and the P ₁ and the P after the determination processing module turns off the determined energy-saving cells ₂ , determine that the energy-saving cell corresponding to the maximum difference is closed, until the difference between the P ₁ and the P ₂ is negative or the load value of the corresponding compensation cell reaches the upper limit.

Wherein, the processing module includes:

The first sub-module is configured to, for each of the energy-saving cells according to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type, search for the energy-saving cell when the energy-saving cell is not closed. The current power consumption value P _Mi corresponding to the load value of ;

The second sub-module is configured to calculate the difference between the current power consumption value P _Mi of the energy-saving cell and the pre-stored sleep power consumption value P _sleep of the energy-saving cell to obtain the P ₁ ;

The third sub-module is configured to search for the current power consumption value P _Ma corresponding to the load value of the compensation cell corresponding to the energy-saving cell according to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type ;

The fourth sub-module is used to calculate the difference between the current power consumption value P _Ma of the corresponding compensation cell and the power consumption value P _Ma ′ after the corresponding compensation cell is determined to carry the user load value of the energy-saving cell, and obtain the Describe P ₂ .

Wherein, the processing module further includes:

The acquisition sub-module is used for calculating the current power consumption value P _Ma of the corresponding compensation cell in the fourth sub-module and the power consumption value P _Ma ′ after the corresponding compensation cell is determined to carry the user load value of the energy-saving cell Before the difference of , obtain the user load value of the energy-saving cell;

a judging submodule for judging the load value after the corresponding compensation cell bears the user load value of the energy-saving cell;

The search sub-module is used to search and obtain the power consumption value P after the corresponding compensation cell bears the user load value of the energy-saving cell according to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type _Ma '.

The above-mentioned technical solutions of the embodiment of the present invention at least include the following beneficial effects:

By comprehensively considering the energy-saving technologies within the cell (symbol shutdown, channel shutdown, carrier shutdown) and the cooperative energy-saving technology between cells (base station dormancy), in the preparation stage, the energy saving technology of each cell in the different activation states of each energy saving type is The correspondence between the load value and the power consumption value and the dormant power consumption information are sent to the decision point. In the execution phase, the decision point receives the cell status information sent by the cell including the load value, energy saving type and its activation state, and according to the pre-obtained cell status information of each cell The corresponding relationship between the load value and the power consumption value in different activation states of each energy-saving type, calculate the power consumption that can be saved, and give priority to closing the cell with the largest power-saving degree, and make full use of the energy-saving potential of the cell itself and the entire network. The network power consumption is reduced from the whole network level, and the network efficiency is improved.

Description of drawings

FIG. 1 is a schematic diagram of a heterogeneous network structure composed of base stations of different standards;

2 is a schematic flow chart 1 of a method for joint power saving within a cell and between cells according to an embodiment of the present invention;

Figure 3 is a schematic diagram of a multi-standard unified network management platform scenario;

4 is a schematic diagram of a macro and micro base station overlapping coverage scenario;

5 is a schematic diagram of a corresponding relationship between load ratio and power consumption according to an embodiment of the present invention;

FIG. 6 is a second schematic flowchart of a method for joint power saving within a cell and between cells according to an embodiment of the present invention;

7 is a schematic overall flow diagram of a method for joint power saving within a cell and between cells according to an embodiment of the present invention;

FIG. 8 is a schematic diagram 1 of an apparatus for joint power saving in a cell and between cells according to an embodiment of the present invention;

FIG. 9 is a second schematic diagram of an apparatus for joint power saving within a cell and between cells according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

An embodiment of the present invention provides a method for joint power saving within a cell and between cells, as shown in FIG. 2 , including:

S101. Receive cell status information including a load value, an energy-saving type, and an activation state reported by each cell, where the cells include: an energy-saving cell whose network coverage is covered by a neighboring cell and a compensation cell other than the energy-saving cell;

S102 , according to the pre-obtained correspondence between the load value and the power consumption value of each cell under different activation states of each energy-saving type and the received cell state information, for each energy-saving cell, separately calculate the amount saved by closing the energy-saving cell. The power consumption value P ₁ and the power consumption increase value P ₂ of the compensation cell caused by the user of the energy-saving cell switching to the corresponding compensation cell, and calculating the difference between P ₁ and P ₂ ;

S103: Determine the energy-saving cell corresponding to the largest difference according to the difference calculated by each energy-saving cell, and turn off the determined energy-saving cell.

Through the above steps, an accurate integrated energy-saving solution within and between stations is provided, which uses an algorithm to preferentially close cells with good energy-saving effects, reduces network power consumption at the level of the entire network, and improves network efficiency.

Specifically, it is first necessary to determine an energy-saving cell and a compensation cell, where an energy-saving cell refers to a cell that can be turned off, and its coverage area can be jointly covered by one or several surrounding cells; a compensation cell refers to a cell in the network. Cells other than energy-saving cells. One energy-saving cell may be covered by one or more compensation cells, and one compensation cell may compensate for one or more energy-saving cells.

For example, if cell A can be covered by cell B, then cell A is an energy-saving cell, and cell B is the corresponding compensation cell of cell A; or cell A is covered by cell B and cell C at the same time, that is, a part of cell A is covered by cell B, The other part is covered by cell C, and cell A is located in the coverage area of cell B and cell C, then cell A is an energy-saving cell, and cell B and cell C together form a corresponding compensation cell of cell A.

It should be noted that the B cell can also be used as a compensation cell for other energy-saving cells, and the compensation cell formed by the B cell and the C cell can also be used as a compensation cell for other energy-saving cells.

After determining the energy-saving cell and the compensation cell, the decision point needs to receive the cell state information including the load value, the energy-saving type and its activation state reported by each cell. It should be noted that the decision point can be different network elements according to different network architectures: in a scenario where a macro base station covers multiple small cells, it can be a macro base station; in a multi-network coexistence scenario, it can be connected to a base station controller (Base Station Controller, BSC), a radio network controller (Radio Network Controller, RNC) and a third-party server of the base station eNB.

The decision point is when the load of the compensation cell is lower than the specified threshold, and the compensation cell can satisfy the Quality of Service (QoS) requested by each user of the energy-saving cell. On the premise that the energy efficiency does not increase, the services of the energy-saving cell can be The amount migrates to the compensation cell.

Specifically: after acquiring the cell state information, it is necessary to calculate the amount of energy saved by closing the energy-saving cell for each energy-saving cell according to the pre-obtained correspondence between the load value and the power consumption value of each cell in different activation states of each energy-saving type. The power consumption value P ₁ and the power consumption increase value P ₂ of the compensation cell caused by the user of the energy-saving cell switching to the corresponding compensation cell.

Then, the difference between the power consumption value P1 saved by the energy _- saving cell and the power consumption increase value P2 _of the compensation cell is calculated. A difference is obtained for each energy-saving cell and the compensation cell corresponding to the energy-saving cell, and the obtained difference values are compared to determine the energy-saving cell corresponding to the largest difference, that is, the energy-saving cell that reduces the power of the entire network the most. , and then turn off the determined energy-saving cell.

The solution proposed in this case is not limited to a specific scenario. As shown in Figures 3 and 4, it can be applied on a multi-standard unified network management platform and under the overlapping coverage of LTE macro and micro base stations.

In the embodiment of the present invention, by receiving the cell state information including the load value, the energy saving type and its activation state sent by each cell, according to the pre-obtained correspondence between the load value and the power consumption value of each cell in different activation states of each energy saving type , calculate the power consumption that can be saved, preferentially close the cell with the largest power saving, make full use of the power saving potential of the cell itself and the entire network, reduce network power consumption from the entire network level, and improve network efficiency.

In the above-mentioned embodiment of the present invention, before receiving the cell state information including the load value, the energy saving type and its activation state reported by each cell, the method further includes:

The corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy saving type is preset, wherein the corresponding relationship according to the difference of the energy saving type and its activation state at least includes: the activation symbol turns off the load-power consumption corresponding relationship, The corresponding relationship between the load and power consumption when the channel is turned off is activated, the corresponding relationship between the load and the power consumption when the carrier is turned off, and the corresponding relationship between the load and the power consumption when no energy saving function is activated.

Specifically, according to different energy saving types, there are different corresponding relationships between the load value and the power consumption value. The energy-saving types include at least: a symbol-off energy-saving type, a channel-off energy-saving type, and a carrier-off energy-saving type.

And in order to prevent the frequent activation and deactivation of the energy-saving function, the thresholds for activation and deactivation of the general energy-saving technology are not aligned. Taking the channel shutdown as an example, if the channel shutdown activation threshold is set to 30%, when the load is reduced to At 30%, the channel shutdown function is activated, and the power of the base station is reduced. If the deactivation threshold is 70%, when the load increases to 70% in the activated state, the function will be deactivated, and the power consumption will increase at this time. As shown in Figure 5.

A load corresponds to different power consumption values in the activated and deactivated states, respectively. When reporting cell status information, each cell needs to report the load value, energy saving type and its activation state. Therefore, setting the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy saving type includes at least: the corresponding relationship between the activation symbol and the load-power consumption, the corresponding relationship between the activation channel and the load-power consumption, and the activation carrier Turn off load-power consumption correspondence and load-power consumption correspondence when no energy-saving features are activated.

For example, the energy-saving type of energy-saving cell A is channel shutdown. When the load is 30%, the channel shutdown function is activated. The power consumption corresponding to the load at this time is 30W. In the activated state, when the load increases to 70% , the channel function will be deactivated, and the power consumption value will increase to 70W. A load corresponds to different power consumption values in the activated and deactivated states. Therefore, when setting the corresponding relationship between the load value and the power consumption value of each cell, not only the energy saving type, but also the activation state needs to be considered.

In the above embodiment of the present invention, after the determined energy-saving cell is turned off, the method further includes:

Continue to calculate P ₁ of the remaining energy-saving cells, P2 of the corresponding compensation cells, and the difference between P ₁ and P ₂ , and determine the energy-saving cell corresponding to the maximum difference to close until the difference between P ₁ and P ₂ is negative or corresponding The load value of the compensation cell reaches the upper limit.

Specifically, after closing the energy-saving cells corresponding to the maximum difference, it is necessary to continue to calculate the remaining energy-saving cells and the corresponding compensation cells. Calculate the power consumption value P1 saved by closing the energy-saving cell and the power consumption increase value P2 _of the compensation cell caused by the user of the energy-saving cell switching to the corresponding compensation cell, and determine that the energy-saving cell corresponding to the maximum difference continues to be closed until P When the difference between ₁ and P2 is negative or the corresponding compensation cell cannot carry the load of the energy _- saving cell, the process is terminated.

For example, there are currently an energy-saving cell 1 and a corresponding compensation cell 1 , an energy-saving cell 2 and a corresponding compensation cell 2 , and an energy-saving cell 3 and a corresponding compensation cell 3 . It should be noted that the compensation cell 1, the compensation cell 2, and the compensation cell 3 here are not necessarily an independent cell, but may be formed by a combination of several cells.

Calculate the power consumption value P11 saved by turning off the energy-saving cell 1 and the power consumption increase value P21 of the compensation cell 1 caused by the user of the energy-saving cell 1 switching to the corresponding compensation cell 1, and calculate the difference between P11 and P21 as the first difference. value.

Calculate the power consumption value P12 saved by closing the energy-saving cell 2 and the power consumption increase value P22 of the compensation cell 2 caused by the user of the energy-saving cell 2 switching to the corresponding compensation cell 2, and calculate the difference between P12 and P22 as the second difference. value.

Calculate the power consumption value P13 saved by closing the energy-saving cell 3 and the power consumption increase value P23 of the compensation cell 3 caused by the user of the energy-saving cell 3 switching to the corresponding compensation cell 3, and calculate the difference between P13 and P23 as the third difference. value. The magnitudes of the first difference, the second difference and the third difference are compared, and when the value of the first difference is the largest, the energy-saving cell 1 is turned off.

After shutting down the energy-saving cell 1, it is necessary to continue to calculate the difference between the remaining energy-saving cell 2 and the compensation cell 2, and the difference between the energy-saving cell 3 and the compensation cell 3. It should be noted that after the energy-saving cell 1 is turned off, the load of the energy-saving cell 2 and the energy-saving cell 3 will not change, but the original compensation cell 1 may be used as the compensation cell of the energy-saving cell 2 or the energy-saving cell 3. The load of the compensation cell 2 corresponding to the energy-saving cell 2 or the compensation cell 3 corresponding to the energy-saving cell 3 may change. It is necessary to recalculate the difference between the energy-saving cell 2 and the compensation cell 2, and the difference between the energy-saving cell 3 and the compensation cell 3. .

Calculate the power consumption value P12' saved by closing the energy-saving cell 2 and the power consumption increase value P22' of the compensation cell 2 caused by the user of the energy-saving cell 2 switching to the corresponding compensation cell 2, and calculate the difference between P12' and P22', as the fourth difference.

Calculate the power consumption value P13' saved by closing the energy-saving cell 3 and the power consumption increase value P23' of the compensation cell 3 caused by the user of the energy-saving cell 3 switching to the corresponding compensation cell 3, and calculate the difference between P13' and P23', as the fifth difference. The magnitudes of the fourth difference and the fifth difference are compared, and when the value of the fourth difference is greater than the value of the fifth difference, the energy-saving cell 2 is turned off.

It should be noted that, when the value of the fourth difference is a negative number, or when the compensation cell 2 cannot carry the load of the energy-saving cell 2, the process is terminated.

In the above-mentioned embodiment of the present invention, as shown in FIG. 6 , step S102 includes:

S1021. According to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type, for each energy-saving cell, search for the current function corresponding to the load value of the energy-saving cell when the energy-saving cell is not turned off. consumption value P _Mi ;

S1022, calculating the difference between the current power consumption value P _Mi of the energy-saving cell and the pre-stored sleep power consumption value P _sleep of the power-saving cell to obtain P ₁ ;

S1023, searching for the current power consumption value P _Ma corresponding to the load value of the compensation cell corresponding to the energy-saving cell according to the corresponding relationship between the load value and the power consumption value of each cell under different activation states of each energy-saving type;

S1024, calculating the difference between the current power consumption value P _Ma of the corresponding compensation cell and the power consumption value P _Ma ′ after the corresponding compensation cell is determined to carry the user load value of the energy-saving cell, and obtains P ₂ ;

S1025. Calculate the difference between P1 and P2.

Specifically, for each energy-saving cell, after acquiring the cell state information, according to the corresponding relationship between the load value and the power consumption value in different activation states of each energy-saving type, find the load value of the energy-saving cell when the energy-saving cell is not turned off and the energy-saving cell. The corresponding current power consumption value P _Mi , and then according to the pre-stored sleep power consumption value Psleep of the energy-saving cell, the difference between P _Mi and Psleep is calculated to obtain P1.

For the compensation cell corresponding to each energy-saving cell, after acquiring the cell state information, the current load when the compensation cell does not carry the user load of the corresponding energy-saving cell is obtained, and the load value and power consumption value under different activation states of each energy-saving type are obtained. The corresponding relationship of , find the current power consumption value P _Ma corresponding to the current load. After obtaining the current power consumption value P _Ma , calculate the difference between P _Ma and P _Ma ' according to the determined power consumption value P _Ma ' after the compensation cell carries the user load value of the corresponding energy-saving cell to obtain P2. Then, the difference between P1 and P2 is calculated, and the energy-saving cell corresponding to the largest difference is determined and closed.

In the above-mentioned embodiment of the present invention, before step S1024, it further includes:

Obtain the user load value of the energy-saving cell;

Determine the load value after the corresponding compensation cell bears the user load value of the energy-saving cell;

According to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type, the power consumption value P _Ma ′ after the corresponding compensation cell carries the user load value of the energy-saving cell is obtained.

Specifically, the detailed process of obtaining P _Ma ' is as follows:

First, obtain the user load of the current energy-saving cell, determine the load change value of the compensation cell after the user load of the energy-saving cell is switched to the corresponding compensation cell, and determine the final load of the compensation cell after carrying the user load of the current energy-saving cell. The corresponding relationship between the load value and the power consumption value in different activation states of each energy saving type, and the power consumption value P _Ma ' corresponding to the final load can be obtained by searching for the power consumption value P _Ma '.

As shown in Figure 7, it is a schematic diagram of the overall flow of an embodiment of the present invention:

S201. Determine an energy-saving cell and a compensation cell according to overlapping coverage between cells;

S202, setting the corresponding relationship between the load value and the power consumption value of each cell under different activation states of each energy saving type;

S203. Receive the cell state information including the load value, the energy saving type and its activation state reported by each cell;

S204, traverse each energy-saving cell, and when the load of the corresponding compensation cell is lower than the specified threshold value, perform the next step;

S205. Obtain the current power consumption value P _Mi of the energy-saving cell according to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type, and calculate the energy-saving cell according to the pre-stored sleep power consumption P _sleep of the energy-saving cell The power consumption value saved after shutdown is P ₁ =P _Mi -P _sleep ;

S206. Determine the increase value P ₂ of the power consumption of the compensation cell according to the load of the energy-saving cell, where P ₂ =P _Ma '-P _Ma , where P _Ma is the current power consumption of the compensation cell, and P _Ma ' is the bearer energy saving determined by the compensation cell Power consumption after cell load;

S207, select the energy-saving cell with the largest P ₁ -P ₂ to close;

S208. For other energy-saving cells, determine whether there is (P ₁ -P ₂ )≤0 or the compensation cell cannot accommodate the load of the energy-saving cell, and if any of the above situations exists, perform step S209, otherwise, perform step S204;

S209. End.

Specifically, an embodiment is used to illustrate:

The energy-saving cell refers to each single-carrier small base station with a transmit power of 10w, and the compensation cell is a single-carrier macro base station with a transmit power of 40w.

It is generally believed that there is a linear relationship between the resource block (Resource Block, RB) and the transmit power of the base station:

P _out =α·sRB+β

Among them, sRB refers to the number of RBs occupied by the data channel, β is a fixed value, P _out is the physical broadcast channel (Physical Broadcast Channel, PBCH), the secondary synchronization signal (Secondary Synchronization Signal, SSS), the primary synchronization signal (Primary Synchronization Signal) Signal, PSS), physical control format indicator channel (Physical Control Format Indicator Channel, PCFICH), reference signal (Common Reference Signal, CRS) related, meaning that when there is no data transmission (sRB=0) in the subframe, due to PBCH, SSS, The power overhead caused by the necessary transmission of PSS, PCFICH, and CRS channels, α refers to the scale factor. The scaling coefficients of the macro base station and the small base station are respectively: α _Ma =0.36, α _Mi =0.09, and the fixed values are β _Ma =12, β _Mi =1.

In addition, the power consumption model of macro base station and small base station is linear:

P=P ₀ +Δ·P _out =P ₀ +Δ·(α·sRB+β)

Therefore, before the base station is shut down, according to the number of RBs sRB _Ma occupied by the macro base station and the number of RBs sRB _Mi occupied by a certain small base station, the power P _Ma consumed by the macro base station and the power P _Mi consumed by a certain small base station are obtained:

P _Ma =P _{0_Ma} +Δ _Ma ·P _out =P _{0_Ma} +Δ _Ma ×(α _Ma ·sRB _Ma +β _Ma ); 0≤sRB _Ma ≤NRB _Ma .

P _Mi =P _{0_Mi} +Δ _Mi ·P _out =P _{0_Mi} +Δ _Mi ×(α _Mi ·sRB _Mi +β _Mi ); 0<sRB _Mi ≤NRB _Mi

Generally Δ _Ma = 2.7, P _{0_Ma} = 291, Δ _Mi = 4.4, P _{0_Mi} = 56,

Therefore, P ₁ =P _Mi -P _sleep P ₂ =P' _Ma -P _Ma =Δ _Ma ·α _Ma ·(sRB' _Ma -sRB _Ma )

Here, sRB' _Ma refers to the number of RBs occupied by the macro base station after the user of the small base station is handed over to the macro base station. Generally speaking, the number of RBs occupied by the users of the small base station will change after switching to the macro base station, which is represented by a coefficient:

sRB' _Ma -sRB _Ma =λ·sRB _Mi

P ₁ -P ₂ =P _Mi -P _sleep -Δ _Ma α _Ma (sRB' _Ma -sRB _Ma )=P _{0_Mi} +Δ _Mi (α _Mi ·sRB _Mi +β _Mi )-P _sleep -Δ _Ma α _Ma ·λ ·sRB _Mi

=sRB _Mi (Δ _Mi α _Mi -λ·Δ _Ma α _Ma )+Δ _Mi β _Mi +P _{0_Mi} -P _sleep

Let P ₁ -P ₂ > 0, then we can get

If λ=1, we can get:

Therefore, in this case, when the number of RBs of the small base station is 25 and the macro base station has remaining capacity to carry its load, the small base station can be turned off to save power. The specific turn-off sequence is that the RB can be turned off according to the smallest occupancy rate.

An embodiment of the present invention also provides an apparatus for joint power saving within a cell and between cells, as shown in FIG. 8 , including:

The receiving module 10 is configured to receive the cell state information including the load value, the energy saving type and its activation state reported by each cell, wherein the cells include: the energy-saving cells whose network coverage is covered by the neighboring cells and the compensation cells other than the energy-saving cells;

The processing module 20 is configured to, for each energy-saving cell, calculate and close the energy-saving cell according to the pre-obtained correspondence between the load value and the power consumption value of each cell in different activation states of each energy-saving type and the received cell state information. The power consumption value P ₁ saved by the cell and the power consumption increase value P ₂ of the compensation cell caused by the user of the energy-saving cell switching to the corresponding compensation cell, and the difference between P ₁ and P ₂ is calculated;

The determination processing module 30 is configured to determine the energy-saving cell corresponding to the maximum difference value according to the difference calculated by each energy-saving cell, and close the determined energy-saving cell.

Wherein, as shown in Figure 9, the device further includes:

The determining module 40 is configured to determine each energy-saving cell and a compensation cell corresponding to the energy-saving cell before the receiving module 10 receives the cell state information including the load value, energy saving type and activation state reported by each cell.

Wherein, the device also includes:

The setting module 50 is used to preset the load value and power consumption of each cell under different activation states of each energy saving type before the receiving module 10 receives the cell state information including the load value, energy saving type and its activation state reported by each cell The corresponding relationship between the values, wherein the corresponding relationship includes at least the corresponding relationship between the activation symbol and the load-power consumption, the corresponding relationship between the activation channel and the load-power consumption, and the activation of the carrier and the load-power consumption. Correspondence and load-power consumption when no energy-saving features are activated.

Wherein, the device also includes:

The calculation and processing module 60 is configured to continue to calculate P ₁ of the remaining energy-saving cells, P2 of the corresponding compensation cells, and the difference between P ₁ and P ₂ after the determination processing module 30 turns off the determined energy-saving cells, and determine the maximum difference The energy-saving cell corresponding to the value is turned off until the difference between P ₁ and P ₂ is negative or the load value of the corresponding compensation cell reaches the upper limit.

Wherein, the processing module 20 includes:

The first sub-module 21 is configured to, for each energy-saving cell, search for the relationship between the energy-saving cell and the energy-saving cell when the energy-saving cell is not closed, according to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type. the current power consumption value P _Mi corresponding to the load value;

The second sub-module 22 is configured to calculate the difference between the current power consumption value P _Mi of the energy-saving cell and the pre-stored sleep power consumption value P _sleep of the power-saving cell to obtain P ₁ ;

The third sub-module 23 is configured to search for the current power consumption value P corresponding to the load value of the compensation cell corresponding to the energy-saving cell according to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type _Ma ;

The fourth sub-module 24 is used to calculate the difference between the current power consumption value P _Ma of the corresponding compensation cell and the power consumption value P _Ma ′ after the corresponding compensation cell is determined to carry the user load value of the energy-saving cell, and obtains P ₂ .

Wherein, the processing module 20 also includes:

The acquisition sub-module 25 is used to calculate the current power consumption value P _Ma of the corresponding compensation cell in the fourth sub-module 24 and the power consumption value P _Ma ′ after the corresponding compensation cell is judged to carry the user load value of the energy-saving cell Before the difference of , obtain the user load value of the energy-saving cell;

Judging sub-module 26, for judging the load value after the corresponding compensation cell bears the user load value of the energy-saving cell;

The search sub-module 27 is used to search and obtain the power consumption value after the corresponding compensation cell carries the user load value of the energy-saving cell according to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type P _Ma '.

The method for joint power saving within a cell and between cells in the embodiment of the present invention comprehensively considers the energy saving technology within the cell (symbol shutdown, channel shutdown, carrier shutdown) and the cooperative energy saving technology between cells (base station sleep), In the preparation stage, the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy saving type and the sleep power consumption information are sent to the decision point. The cell state information of the type and its activation state, according to the pre-obtained relationship between the load value and the power consumption value of each cell in different activation states of each energy saving type, calculate the power consumption that can be saved, and give priority to turning off the power saving degree The largest cell makes full use of the energy-saving potential of the cell itself and the entire network, reducing network power consumption from the entire network level and improving network efficiency.

It should be noted that, the device for joint power saving within a cell and between cells provided in the embodiment of the present invention is a device applying the above method, then all the embodiments of the above method are applicable to the device, and can achieve the same or similar beneficial effect.

The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (12)

1. A method for joint power saving in a cell and between cells, wherein the method comprises: Receive cell status information including load value, energy saving type and activation status reported by each cell, wherein the cells include: energy saving cells whose network coverage is covered by neighboring cells and compensation cells other than the energy saving cells; According to the pre-obtained correspondence between the load value and the power consumption value of each cell in different activation states of each energy-saving type and the received cell state information, for each energy-saving cell, calculate and disable the power-saving cell. The saved power consumption value P ₁ and the power consumption increase value P ₂ of the compensation cell caused by the user of the energy-saving cell switching to the corresponding compensation cell, and calculating the difference between the P ₁ and the P ₂ ; According to the difference calculated by each energy-saving cell, the energy-saving cell corresponding to the largest difference is determined, and the determined energy-saving cell is turned off. 2 . The method according to claim 1 , wherein before receiving the cell state information including the load value, the energy saving type and its activation state reported by each cell, the method further comprises: 2 . Each of the energy-saving cells and a compensation cell corresponding to the energy-saving cells are determined. 3 . The method according to claim 1 , wherein before receiving the cell state information including the load value, the energy saving type and its activation state reported by each cell, the method further comprises: 3 . The corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy saving type is preset, wherein the corresponding relationship according to the difference of the energy saving type and its activation state at least includes: the activation symbol turns off the load-power consumption corresponding relationship, the corresponding relationship between the load and the power consumption when the channel is turned off, the corresponding relationship between the load and the power consumption when the carrier is turned off, and the corresponding relationship between the load and the power consumption when no energy saving function is activated. 4. The method according to claim 1, wherein after the determined energy-saving cell is turned off, the method further comprises: Continue to calculate the P ₁ of the remaining energy-saving cells, the P2 of the corresponding compensation cells, and the difference between the P ₁ and the P ₂ , and determine that the energy-saving cell corresponding to the largest difference is turned off until the P ₁ and the P 2 are closed. The difference value of P ₂ is negative or the load value of the corresponding compensation cell reaches the upper limit. 5 . The method according to claim 1 , wherein, according to the pre-obtained correspondence between the load value and the power consumption value of each cell in different activation states of each energy saving type and the received cell state. 6 . information, for each of the energy-saving cells, calculate the power consumption value P ₁ saved by turning off the energy-saving cell and the power consumption increase value P ₂ of the compensation cell caused by the user of the energy-saving cell switching to the corresponding compensation cell, including : According to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type, for each energy-saving cell, search for the current function corresponding to the load value of the energy-saving cell when the energy-saving cell is not turned off. consumption value P _Mi ; Calculate the difference between the current power consumption value P _Mi of the energy-saving cell and the pre-stored sleep power consumption value P _sleep of the energy-saving cell to obtain the P ₁ ; Find the current power consumption value P _Ma corresponding to the load value of the compensation cell corresponding to the energy-saving cell according to the corresponding relationship between the load value and the power consumption value of each cell under different activation states of each energy-saving type; Calculate the difference between the current power consumption value P _Ma of the corresponding compensation cell and the determined power consumption value P _Ma ′ after the corresponding compensation cell carries the user load value of the energy-saving cell, and obtain the P ₂ . 6. The method according to claim 5, wherein the calculation of the current power consumption value P _Ma of the corresponding compensation cell and the power consumption after the corresponding compensation cell is determined to carry the user load value of the energy-saving cell Before the difference in value P _Ma ', the method further includes: Obtain the user load value of the energy-saving cell; Determine the load value after the corresponding compensation cell bears the user load value of the energy-saving cell; According to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type, the power consumption value P _Ma ′ after the corresponding compensation cell carries the user load value of the energy-saving cell is obtained. 7. A device for joint power saving within a cell and between cells, wherein the device comprises: A receiving module, configured to receive cell status information including load value, energy-saving type and activation state reported by each cell, wherein the cell includes: an energy-saving cell whose network coverage is covered by a neighboring cell and compensation other than the energy-saving cell community; The processing module is configured to calculate the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy saving type and the received cell state information, respectively, for each energy saving cell. The power consumption value P ₁ saved by turning off the energy-saving cell and the power consumption increase value P ₂ of the compensation cell caused by the user of the energy-saving cell switching to the corresponding compensation cell, and calculating the difference between the P ₁ and the P ₂ value; A determination processing module, configured to determine the energy-saving cell corresponding to the maximum difference value according to the difference calculated by each energy-saving cell, and close the determined energy-saving cell. 8. The apparatus of claim 7, wherein the apparatus further comprises: A determining module, configured to determine each of the energy-saving cells and a compensation cell corresponding to the energy-saving cell before the receiving module receives the cell state information including the load value, energy-saving type and activation state reported by each cell. 9. The apparatus of claim 7, wherein the apparatus further comprises: A setting module, configured to preset the load value and power consumption of each cell under different activation states of each energy-saving type before the receiving module receives the cell state information including the load value, energy-saving type and its activation state reported by each cell The corresponding relationship between the values, wherein the corresponding relationship includes at least: the corresponding relationship between the activation symbol and the load-power consumption, the corresponding relationship between the activation channel and the load-power consumption, and the activation of the carrier and the load-power consumption. Power consumption correspondence and load-power consumption correspondence when no energy-saving features are activated. 10. The apparatus of claim 7, wherein the apparatus further comprises: A calculation processing module, configured to continue to calculate the P ₁ of the remaining energy-saving cells, the P2 of the corresponding compensation cells, and the P ₁ and the P after the determination processing module turns off the determined energy-saving cells ₂ , determine that the energy-saving cell corresponding to the maximum difference is closed, until the difference between the P ₁ and the P ₂ is negative or the load value of the corresponding compensation cell reaches the upper limit. 11. The apparatus of claim 7, wherein the processing module comprises: The first sub-module is configured to, for each of the energy-saving cells according to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type, search for the energy-saving cell when the energy-saving cell is not closed. The current power consumption value P _Mi corresponding to the load value of ; The second sub-module is configured to calculate the difference between the current power consumption value P _Mi of the energy-saving cell and the pre-stored sleep power consumption value P _sleep of the energy-saving cell to obtain the P ₁ ; The third sub-module is configured to search for the current power consumption value P _Ma corresponding to the load value of the compensation cell corresponding to the energy-saving cell according to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type ; The fourth sub-module is used to calculate the difference between the current power consumption value P _Ma of the corresponding compensation cell and the power consumption value P _Ma ′ after the corresponding compensation cell is determined to carry the user load value of the energy-saving cell, and obtain the Describe P ₂ . 12. The apparatus of claim 11, wherein the processing module further comprises: The acquisition sub-module is used for calculating the current power consumption value P _Ma of the corresponding compensation cell in the fourth sub-module and the power consumption value P _Ma ′ after the corresponding compensation cell is determined to carry the user load value of the energy-saving cell Before the difference of , obtain the user load value of the energy-saving cell; a judging submodule for judging the load value after the corresponding compensation cell bears the user load value of the energy-saving cell; The search sub-module is used to search and obtain the power consumption value P after the corresponding compensation cell bears the user load value of the energy-saving cell according to the corresponding relationship between the load value and the power consumption value of each cell in different activation states of each energy-saving type _Ma '.